Click sound generator for fishing reel
BACKGROUND OF THE INVENTION 
     This invention relates to an improvement of a click sound generator for a fishing reel, and more particularly, to a click sound generator for producing two kinds of click sound for a fishing reel. 
     In a conventional fishing click sound generator as shown in, for example, Unexamined Japanese Utility Model Publication No. 62-57675, when a fishing line is unwound from a spool upon hitting fish, a clicking toothed gear associated with the spool is rotated in the reverse direction, so that a clicking claw which is in contact with a clicking toothed gear is pivotally swung to thereby generate a click sound. The sound enables a fisherman to perceive fish being hit. This conventional manner is well known. 
     In this conventional generator, as a result of using a strong spring and a weak spring, a large sound is generated when the spool is rotated in a direction in which the fishing line is unwound from the spool, whereas small sound is generated in the fishing-line winding direction in which the click sound is not needed. This causes the clicking claw and clicking toothed gear to have a higher durability. 
     The conventional click sound generator, however, suffers from the following problems. In the conventional type click sound generator, when the fishing line is unwound from the reel, due to the fact that biasing forces of the strong and weak springs are both applied to the clicking claw in the same direction, the clicking claw is struck on the clicking toothed gear strongly, so that the large click sound is generated from the clicking claw and the clicking toothed gear. Since both biasing forces are applied to the clicking claw in the same direction, an interference of the strong and weak springs is likely to influence the click sound generation in the fishing-line unwinding direction, so that the click sounds are likely to be changeable and to be doubled. Consequently, constant and crisp click sounds cannot be generated in the fishing-line unwinding direction. 
     Further, it is very difficult to assemble two springs with the clicking claw so that two springs should be assembled against the biasing forces of two springs which work in the same direction. 
     Furthermore, since the fishing claw is made to be engaged with and disengaged from the clicking toothed gear, a special mechanism, such as an eccentricity cam, is needed, so that a large number of mechanical parts are required and hence, the mechanism of the click sound generator is expensive. 
     SUMMARY OF THE INVENTION 
     It is an object of the present invention to provide a click sound generator for a fishing reel, which overcomes the above-mentioned problems. 
     Another object of the present invention is to provide a click sound generator which provides a click sound generator which is simple in construction of mechanical parts and which generates comfortable click sound. 
     According to the present invention, the above-noted and other objects are attained by a click sound generator for a fishing reel having a clicking toothed gear being rotatable together with a spool, a clicking claw arranged in engagement with the clicking toothed gear, a leaf spring being in contact with one side of the clicking claw so that a strong resilient force of the spring is applied to the clicking claw when a spool is rotated in the fishing-line unwinding direction, and a spring being contact with the other side of the clicking claw so that a weak resilient force of the spring is applied to the clicking claw in the opposite direction of the strong force when a spool is rotated in another direction, that is, in the fishing-line winding direction. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     The manner by which the above objects, and other objects, features, and advantages of the present invention are attained will become fully apparent from the following detailed description when it is considered in view of the drawings, wherein: 
     FIG. 1 is a vertical sectional view of a click sound generator of an embodiment of the present invention; 
     FIG. 2 is a sectional view taken along the line of FIG. 1; 
     FIG. 3 is a front view showing the major parts of the embodiment in FIG. 1 when the clicking claw is disengaged from the clicking toothed gear; 
     FIG. 4 is a front view showing the major parts of the embodiment in FIG. 1 in the unwinding rotation of the spool; 
     FIG. 5 is a front view showing the major parts of the embodiment in FIG. 1 in the winding rotation of the spool; 
     FIG. 6 is a front view showing major parts of another embodiment of the present invention; and 
     FIG. 7 is a front view showing major parts of still another embodiment of the present invention. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     The present invention will now be described in detail with reference to the accompanying drawings. 
     In FIGS. 1 and 2, there is a fishing reel having a spool shaft 2 secured to a spool 1. A toothed clicking gear 3 is secured to the spool shaft 2 to rotate together with spool 1. A clicking claw 4 is arranged in engagement with the clicking toothed gear 3 and is pivotally mounted on a support shaft 6 which is supported to a side plate 5 to be movable up and down. Accordingly, the clicking claw 4 may selectively engage with and disengage from the clicking toothed gear 3. 
     A leaf spring 7 fixed to the side plate 5 is in contact with one side of the clicking claw 4, so that a strong resilient force of the leaf spring 7 is applied to the clicking claw 4 to generate a large click sound upon the reverse rotation of the spool, that is, when the spool is rotated in a direction in which the fishing line is unwound from the spool. 
     A torsion spring 8 is arranged in contact with the other side of the clicking claw 4, so that a weak resilient force of the torsion spring 8 is applied to the clicking claw 4 to generate a small click sound during the forward rotation of the spool, that is, when a spool is rotated in a fishing-line winding direction. 
     Accordingly, the large click sound can be generated from the clicking claw 4 and clicking toothed gear 3 by the action of the strong resilient force of the leaf spring 7 when the clicking toothed gear 3 is rotated clockwise as shown in FIG. 4, that is, when the fishing line is unwound from the spool 1. The small click sound can be generated by the action of the weak resilient force of the torsion spring 8 when the clicking toothed gear 3 is rotated counterclockwise as shown in FIG. 5, that is, when the fishing line is wound on the spool 1. 
     Further, as best shown in FIG. 3, if the support shaft 6 is moved upwardly to disengage the clicking claw 4 from the clicking toothed gear 3, it is possible to rotate the clicking toothed gear 3 in either the forward or the reverse direction. 
     FIG. 6 shows a click sound generator in accordance with another embodiment of the present invention, in which another leaf spring 11 is used in place of the weaker spring 8, and in which the leaf spring is in contact with the clicking claw 4 at an opposite side of the strong leaf spring 7. 
     FIG. 7 shows still another embodiment of the present invention, in which a tension coiled spring 12 is used in place of the weaker spring 8. In addition, the stop 9 as shown in FIGS. 1, 3-5 and 7, or stops 9 and 10 as shown in FIG. 6, are provided in order to keep the clicking claw 4 in a neutral position in which it is unbiased by the leaf spring. 
     In the click sound generator in accordance with the present invention, the stronger leaf spring and the weaker spring which individually act on the clicking claw in the opposite directions to each other are arranged in engagement with the clicking claw in order to generate the large click sound by the action of the strong resilient force of the leaf spring when the fishing line is unwound from the spool, so that the comfortable large click sound is generated, and the sound enables a fisherman to perceive fish being hit. Further, since the resilient forces of the springs is applied to the clicking claw in the opposite direction, it is easy to assemble mechanical parts into the click sound generator. Furthermore, in order to make the clicking claw engaged with and disengaged from the clicking toothed gear, a special mechanism is not needed, so that the click sound generator dispenses with a necessity of a large number of mechanical parts, to reduce the manufacture cost. 
     The click sound generator of the present invention has the above-mentioned features and advantages. 
     The invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof.